212270370 has 64 divisors (see below), whose sum is σ = 550126080. Its totient is φ = 52109568.

The previous prime is 212270297. The next prime is 212270389. The reversal of 212270370 is 73072212.

It is a self number, because there is not a number n which added to its sum of digits gives 212270370.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280032 + ... + 280788.

It is an arithmetic number, because the mean of its divisors is an integer number (8595720).

Almost surely, 2^212270370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212270370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275063040).

212270370 is an abundant number, since it is smaller than the sum of its proper divisors (337855710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212270370 is a wasteful number, since it uses less digits than its factorization.

212270370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 212270370 is about 14569.5013641511. The cubic root of 212270370 is about 596.5265698288.

The spelling of 212270370 in words is "two hundred twelve million, two hundred seventy thousand, three hundred seventy".